[Rcpp-devel] Help reading libzma file

[Roberto Spadim]

Nice, thanks Dirk, I will test it!

Em qui., 23 de jun. de 2022 às 21:28, Dirk Eddelbuettel <edd at debian.org>
escreveu:

>
> On 23 June 2022 at 20:46, Roberto Spadim wrote:
> | Uhm, yes I see
> | I testd with package, and linux, it works
> | But with Windows it don't find the liblzma
>
> "Par for the course" as they say -- Windows has not standard library
> location
> so you will need an 'extra convention' as either the CRAN rules of
> installing
> a bunch of library in one jointly accessed directory, or by following
> per-library environment variables. Here is what RcppGSL does for GSL:
>
> PKG_CPPFLAGS= -I../windows/gsl-2.7/include -I../inst/include
> PKG_LIBS= -L../windows/gsl-2.7/lib${R_ARCH}${CRT} -lgsl -lgslcblas
>
> all: clean winlibs
>
> winlibs:
>         "${R_HOME}/bin${R_ARCH_BIN}/Rscript.exe" "../tools/winlibs.R"
>
> clean:
>         rm -f $(SHLIB) $(OBJECTS)
>
> ie it can just assume GSL is present. CRAN documents somewhere what
> libraries
> yu can expect; I cannot from the top of my head recall if LZMA is part of
> that set.
>
> Portable development is hard for a reason. Operating systems are
> idiosyncratic.
>
> Dirk
>
> |
> | Em qui., 23 de jun. de 2022 às 07:59, Dirk Eddelbuettel <edd at debian.org>
> | escreveu:
> |
> | >
> | > On 23 June 2022 at 10:05, Serguei Sokol wrote:
> | > | Le 23/06/2022 à 04:07, Roberto Spadim a écrit :
> | > | > Hi folks
> | > | >
> | > | > I have a .xz file and need to read it and "convert" to a DataFrame
> | > using
> | > | > Rcpp if possible.
> | > | >
> | > | > But... I'm with a problem (first time testing this) using liblzma
> with
> | > | > Rcpp, I already know how to do this with CMakeLists.txt, but I
> don't
> | > | > know how to do with RCpp
> | > | >
> | > | > Anyone have an idea?
> | > | You have to use Makevars file, either in src/ or in $HOME/.R/ dir.
> | > | In this file you have to add something like:
> | > |
> | > |    PKG_CPPFLAGS += -I<dir_where_lzma.h_leaves>
> | > |    PKG_LDFLAGS += -L<dir_where_liblzma.so_lives> -llzma
> | > |
> | > | To make this solution portable, you can want to use configure script
> | > | which usage is described in WRE
> | > |
> | >
> https://cran.r-project.org/doc/manuals/r-release/R-exts.html#Configure-and-cleanup
> | > |
> | > | Best,
> | > | Serguei.
> | > |
> | > | >
> | > | > Output from compile time:
> | > | >
> | > | >  > sourceCpp("D:/Trabalho/FTDB-R/FTDB/src/ftdbR.cpp")
> | >
> | > And you want to look into using a package, not `sourceCpp()` which is
> | > designed for more one-off interactive work.
> | >
> | > You can start a package with the `Rcpp.package.skeleton()` function,
> and
> | > then
> | > add a src/Makevars as correctly suggested by Serguei.  There are also
> many
> | > example Rcpp on CRAN, GitHub and other places to look at.  The `qs` and
> | > `fst`
> | > packages both cover compression too (but do a lot more...), I can't
> right
> | > now
> | > think of a simpler package adding just one compressor but there may
> well
> | > be one.
> | >
> | > Regards, Dirk
> | >
> | > | > /mingw64/bin/g++ -std=gnu++11  -I"C:/PROGRA~1/R/R-41~1.2/include"
> | > | > -DNDEBUG
> | > -I"C:/Users/rspadim/Documents/R/win-library/4.1/Rcpp/include"
> | > | > -I"D:/Trabalho/FTDB-R/FTDB/src"
> | > -I"D:/Trabalho/FTDB-R/FTDB/inst/include"
> | > | >         -O2 -Wall  -mfpmath=sse -msse2 -mstackrealign  -c
> | > | > D:/Trabalho/FTDB-R/FTDB/src/xz/xz/decode.cpp -o
> | > | > D:/Trabalho/FTDB-R/FTDB/src/xz/xz/decode.o
> | > | > D:/Trabalho/FTDB-R/FTDB/src/xz/xz/decode.cpp:5:10: fatal error:
> | > lzma.h:
> | > | > No such file or directory
> | > | >   #include <lzma.h>
> | > | >            ^~~~~~~~
> | > | > compilation terminated.
> | > | > make: *** [C:/PROGRA~1/R/R-41~1.2/etc/x64/Makeconf:245:
> | > | > D:/Trabalho/FTDB-R/FTDB/src/xz/xz/decode.o] Error 1
> | > | > Error in sourceCpp("D:/Trabalho/FTDB-R/FTDB/src/ftdbR.cpp") :
> | > | >    Error 1 occurred building shared library.
> | > | > In addition: Warning message:
> | > | > In normalizePath(path.expand(path), winslash, mustWork) :
> | > | >    path[1]="D:/Trabalho/FTDB-R/FTDB/src/../inst/include": O sistema
> | > não
> | > | > pode encontrar o caminho especificado
> | > | >
> | > | >
> | > | > _______________________________________________
> | > | > Rcpp-devel mailing list
> | > | > Rcpp-devel at lists.r-forge.r-project.org
> | > | >
> | >
> https://lists.r-forge.r-project.org/cgi-bin/mailman/listinfo/rcpp-devel
> | > |
> | > | _______________________________________________
> | > | Rcpp-devel mailing list
> | > | Rcpp-devel at lists.r-forge.r-project.org
> | > |
> https://lists.r-forge.r-project.org/cgi-bin/mailman/listinfo/rcpp-devel
> | > --
> | > dirk.eddelbuettel.com | @eddelbuettel | edd at debian.org
> | >
> |
> |
> | --
> | Roberto Spadim
> | SPAEmpresarial - Software ERP/Scada
> | Eng. Automação e Controle, Eng. Financeira
>
> --
> dirk.eddelbuettel.com | @eddelbuettel | edd at debian.org
>


-- 
Roberto Spadim
SPAEmpresarial - Software ERP/Scada
Eng. Automação e Controle, Eng. Financeira
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.r-forge.r-project.org/pipermail/rcpp-devel/attachments/20220623/32a5032c/attachment-0001.html>